Version 0.2.3 (2014-07-18)
===
Improve performance (#26, #27)
Add `list.flatten` that flattens a nested list to one-level.



Version 0.2.2 (2014-07-11)
===
Add `list.stack` that binds list members to a data.frame.
Add `list.zip` that combines multiple lists element-wisely.
Add `list.maps` that performs mapping over multiple lists.
Performance improvements.
Minor maintainence updates.
`list.cases` supports list-like cases
Fixed [#23](https://github.com/renkun-ken/rlist/issues/23)
Fixed [#25](https://github.com/renkun-ken/rlist/issues/25)
`list.select` no longer accepts explicit lambda expressions.
Vignettes updated


Version 0.2.1 (2014-07-04)
===
Add new function `list.table`
Minor maintainence updates.
Fixed [#6](https://github.com/renkun-ken/rlist/issues/6)
Fixed [#11](https://github.com/renkun-ken/rlist/issues/11)
Fixed [#20](https://github.com/renkun-ken/rlist/issues/20)
Fixed [#21](https://github.com/renkun-ken/rlist/issues/21)


Version 0.2 (2014-07-02)
===
Add `list.join`, `list.mapv`, `list.do`, `list.clean`, `list.parse`
Add vignettes


Version 0.1 (2014-06-27)
===
Implement functions
